Science Gateway
Radioisotope
Calcium - 45
Carbon - 14
Chromium - 51
Hydrogen - 3
Iodine - 125
Iron - 59
Manganese - 54
Phosphorus - 32
Phosphorus - 33
Sodium - 22
Sulfur - 35

SULFUR - 35

(35S)

Physical Half-life: 87.39 days
Radiations:-167.47 keV

External Exposure:Low energy , not external hazard, radiation badge not necessary.
Biological Data: ALI 8 mCi (ingestion), 10 mCi (inhalation)
Biological half-life 90 days
Effective half-life 44.3 days
Critical Organs Whole Body and Testes
Bioassay Urinalysis
Shielding: None is recommended.
Range of in air is 11" and 0.01" in lucite.
Monitoring
& Efficiency
LSC (Eff. ~85%)
Thin-window GM (Eff. ~10%)

Special Considerations

  • Solutions of 35S-amino acids may be volatile, and can be a contamination problem.
  • Vials of 35S should be opened in a fume hood.
  • Using an activated charcoal filter on the top shelf of incubators will reduce the build up of contamination on the interior surfaces of the incubator.
  • No shielding is needed, it is normally provided with the solution and the apparatus being used.